Application of TiO2 and ZnO nanoparticles immobilized on clay in wastewater treatment: a review

Mustapha, S.; Ndamitso, M. M.; Abdulkareem, A. S.; Tijani, Jimoh Oladejo; Shuaib, D. T.; Ajala, A. O.; Mohammed, Abdul Kabir

doi:10.1007/s13201-019-1138-y

Cited by 168 publications

(75 citation statements)

References 179 publications

(104 reference statements)

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“…Owing to great surface properties and the reactivity of these nanomaterials, inhibition of pathogens in water could be done easily [158]. Nanomaterials based on Ag, CuO, ZnO, TiO 2 , polymeric NPs and CNTs have been investigated for the disinfection of wastewater [159][160][161][162][163][164]. Among the metal NPs, copper (Cu) NPs are some of the most effective and potent antimicrobial agents.…”

Section: Disinfection and Pathological Controlmentioning

confidence: 99%

Nanotechnology in Wastewater Management: A New Paradigm Towards Wastewater Treatment

et al. 2021

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Clean and safe water is a fundamental human need for multi-faceted development of society and a thriving economy. Brisk rises in populations, expanding industrialization, urbanization and extensive agriculture practices have resulted in the generation of wastewater which have not only made the water dirty or polluted, but also deadly. Millions of people die every year due to diseases communicated through consumption of water contaminated by deleterious pathogens. Although various methods for wastewater treatment have been explored in the last few decades but their use is restrained by many limitations including use of chemicals, formation of disinfection by-products (DBPs), time consumption and expensiveness. Nanotechnology, manipulation of matter at a molecular or an atomic level to craft new structures, devices and systems having superior electronic, optical, magnetic, conductive and mechanical properties, is emerging as a promising technology, which has demonstrated remarkable feats in various fields including wastewater treatment. Nanomaterials encompass a high surface to volume ratio, a high sensitivity and reactivity, a high adsorption capacity, and ease of functionalization which makes them suitable for application in wastewater treatment. In this article we have reviewed the techniques being developed for wastewater treatment using nanotechnology based on adsorption and biosorption, nanofiltration, photocatalysis, disinfection and sensing technology. Furthermore, this review also highlights the fate of the nanomaterials in wastewater treatment as well as risks associated with their use.

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Section: Disinfection and Pathological Controlmentioning

confidence: 99%

Nanotechnology in Wastewater Management: A New Paradigm Towards Wastewater Treatment

et al. 2021

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“…Beside the optical behavior linked to the change in refractive index, the nanostructured materials obtained by BCPs self-assembly and SIS exhibit interesting photoemission properties. Particular attention was paid to the electro- and photo-luminescence of nanostructures based on ZnO, a biocompatible and non-toxic material [ 79 ] with a wide range of potential applications in photonics [ 48 , 80 ], solid-state devices [ 81 ], gas sensors [ 82 ], water treatment [ 83 ] and biosensors [ 84 ].…”

Section: Control Of the Materials’ Functional Properties By Sismentioning

confidence: 99%

Recent Advances in Sequential Infiltration Synthesis (SIS) of Block Copolymers (BCPs)

et al. 2021

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In the continuous downscaling of device features, the microelectronics industry is facing the intrinsic limits of conventional lithographic techniques. The development of new synthetic approaches for large-scale nanopatterned materials with enhanced performances is therefore required in the pursuit of the fabrication of next-generation devices. Self-assembled materials as block copolymers (BCPs) provide great control on the definition of nanopatterns, promising to be ideal candidates as templates for the selective incorporation of a variety of inorganic materials when combined with sequential infiltration synthesis (SIS). In this review, we report the latest advances in nanostructured inorganic materials synthesized by infiltration of self-assembled BCPs. We report a comprehensive description of the chemical and physical characterization techniques used for in situ studies of the process mechanism and ex situ measurements of the resulting properties of infiltrated polymers. Finally, emerging optical and electrical properties of such materials are discussed.

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“…One study indicated that a nanoparticle TiO 2 -based photoelectrocatalytic process has high potential to be utilized as an appropriate treatment method for pharmaceutical effluents containing cefotaxime antibiotics [37]. One of the most important problems of this process is recycling of nanoparticles, which can be addressed by doping and codoping of metal oxide nanomaterials, immobilization of nanoparticles on appropriate matrices, and nano-based filters through the combination of clay/ZnO nanocomposites [38,39].…”

Section: Effect Of the Catalyst Dosesmentioning

confidence: 99%

Comparison of the Efficiency of Ultraviolet/Zinc Oxide (UV/ZnO) and Ozone/Zinc Oxide (O3/ZnO) Techniques as Advanced Oxidation Processes in the Removal of Trimethoprim from Aqueous Solutions

Taie

Fadaei

Sadeghi

et al. 2021

International Journal of Chemical Engineering

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Nowadays, advanced oxidation processes, particularly photocatalyst process and catalytic ozonation by ZnO nanoparticles, are the most efficient method of eliminating pharmaceuticals. The purpose of this study was to compare the efficiency of ultraviolet/zinc oxide (UV/ZnO) and ozone/zinc oxide (O3/ZnO) techniques as advanced oxidation processes in the removal of trimethoprim (TMP) from aqueous solutions. The process consisted of 0.6 g/L of ozone (O3), pH = 7.5 ± 0.5, TMP with a concentration of 0.5–5 mg/L, ZnO with a dose of 50–500 mg/L, 5–30 min reaction time, and 30–180 min contact time with UV radiation (6 W, 256 nm) in a continuous reactor. The high removal efficiency was achieved after 25 minutes when ZnO is used in 1 mg/L TMP under an operational condition at pH 7.5. When the concentration of the pollutant increased from 0.5 to 1, the average removal efficiency increased from 78% to 94%, and then, it remained almost constant. An increase in the reaction time from 5 to 25 minutes will cause the average elimination to increase from 84% to 94%. The results showed that the efficiency of O3/ZnO process in the removal of TMP was 94%, while the removal efficiency of UV/ZnO process was 91%. The findings exhibited that the kinetic study followed the second-order kinetics, both processes. With regard to the results, the photocatalyst process and catalytic ozonation by ZnO nanoparticles can make acceptable levels for an efficient posttreatment. Finally, this combined system is proven to be a technically effective method for treating antibiotic contaminants.

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Application of TiO2 and ZnO nanoparticles immobilized on clay in wastewater treatment: a review

Cited by 168 publications

References 179 publications

Nanotechnology in Wastewater Management: A New Paradigm Towards Wastewater Treatment

Nanotechnology in Wastewater Management: A New Paradigm Towards Wastewater Treatment

Recent Advances in Sequential Infiltration Synthesis (SIS) of Block Copolymers (BCPs)

Comparison of the Efficiency of Ultraviolet/Zinc Oxide (UV/ZnO) and Ozone/Zinc Oxide (O3/ZnO) Techniques as Advanced Oxidation Processes in the Removal of Trimethoprim from Aqueous Solutions

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